21938168

素因数分解:

$2^3\times 7^1\times {\mathrm{391753}}^1$

素因数の和:391766

約数の個数: 16

約数和(自身を含む): 47010480

約数和(自身を除く): 25072312

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 391753, 783506, 1567012, 2742271, 3134024, 5484542, 10969084, 21938168]

約数ペア:

[(1, 21938168), (2, 10969084), (4, 5484542), (7, 3134024), (8, 2742271), (14, 1567012), (28, 783506), (56, 391753)]